Domestic sewage treatment device adapting to water volume change

Abstract

The utility model relates to the technical field of domestic sewage treatment, in particular to a domestic sewage treatment device adapting to water volume variation, which comprises a treatment tank, a water inlet pipe, a water outlet pipe, a stirring mechanism and an adding mechanism, the adding mechanism comprises a storage cylinder, the bottom of the storage cylinder is fixed with the top of the treatment tank, and a discharge hole is formed in the bottom of the storage cylinder and communicated with the inside of the treatment tank. A discharging valve linked with the discharging hole and the water inlet pipe is arranged in the treatment tank, the discharging valve comprises a supporting plate, the supporting plate is fixed to the inner wall of the treatment tank through a first damping part, one end of the supporting plate blocks the discharging hole, and the other end of the supporting plate is fixed to the outer side of the water inlet pipe through a second damping part; a protection device is also arranged between the supporting plate and the inner wall of the treatment tank. The discharge hole can be protected by arranging the protection device, so that sewage is prevented from splashing to pollute medicaments and melt the medicaments, the medicaments are prevented from being blocked, the flow directions of water flow and the medicaments can be guided, and the whole treatment process is ensured to be carried out smoothly.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic sewage treatment technical field, concretely is a kind of domestic sewage treatment device suitable for water quantity change. BACKGROUND

[0002] Domestic sewage treatment device is a kind of device for treating sewage generated in daily life, when using domestic sewage treatment device, the domestic sewage filtered is passed to the inside of treatment tank through inlet pipe, and then powdery chemical agent is added to the inside of treatment tank, the stirring rod is rotated by motor, so that the agent and sewage are mixed uniformly, so that bacteria and organic matter in sewage are killed, and then a certain sewage treatment effect is played.

[0003] In daily work, it is found that domestic sewage treatment device still has at least the following problems: when using domestic sewage treatment device, the domestic sewage filtered is passed to the inside of treatment tank through inlet pipe, and then powdery chemical agent is added to the inside of treatment tank, the stirring rod is rotated by motor, so that the agent and sewage are mixed uniformly, so that bacteria and organic matter in sewage are killed, and then a certain sewage treatment effect is played, but in actual use process, because the feed inlet of adding agent is arranged at the top of treatment tank, when the agent and sewage are fully mixed by stirring, the sewage can be splashed to discharge hole, and then the agent is melted, so that the melted agent can block the discharge hole. UTILITY MODEL CONTENT

[0004] In view of the problem that agent is blocked in discharge hole due to sewage splashing when adding agent in prior art, the utility model provides a domestic sewage treatment device suitable for water quantity change.

[0005] The utility model is realized through the following technical solutions:

[0006] A domestic sewage treatment device suitable for water quantity change, which comprises a treatment tank, an inlet pipe, an outlet pipe, a stirring mechanism and an adding mechanism, the inlet pipe is communicated with the inside of the treatment tank from the top of the treatment tank, the stirring mechanism comprises a motor and a stirring rod, the shell of the motor is fixed to the top of the treatment tank, one end of the stirring rod is fixedly connected with the output end of the motor by penetrating through the top of the treatment tank, and the stirring rod is rotatably connected with the treatment tank;

[0007] The adding mechanism comprises a storage cylinder, the bottom of the storage cylinder is fixed to the top of the processing tank, a discharge hole is formed in the bottom of the storage cylinder and is communicated with the inside of the processing tank, a discharging valve is arranged in the processing tank and is connected with the discharge hole and the water inlet pipe, the discharging valve comprises a support plate, the support plate is fixed to the inner wall of the processing tank through a first damping member, one end of the support plate is blocked at the discharge hole, and the other end of the support plate is fixed to the outer side of the water inlet pipe through a second damping member, the discharge hole, the first damping member, the water outlet of the water inlet pipe and the second damping member are located on the same straight line; when not in use, the support plate is blocked at the discharge hole.

[0008] A protection device is further arranged between the support plate and the inner wall of the processing tank, the water outlet pipe is arranged at the bottom of the processing tank, and an electromagnetic valve is arranged in the water outlet pipe.

[0009] Preferably, the first damping member comprises a first damping rod and a first spring, one end of the first damping rod is connected with the inner wall of the processing tank, the other end of the first damping rod is connected with the support plate, and the first spring is coaxially sleeved outside the first damping rod; the second damping member comprises a limiting rod and a second spring, one end of the limiting rod is connected with the support plate, the other end of the limiting rod penetrates through the top of the processing tank and extends out to connect a limiting block, and the second spring is coaxially sleeved on the part of the limiting rod extending out of the processing tank.

[0010] Preferably, one end of the support plate blocking the discharge hole is provided with a sealing plug, and the sealing plug is slidably connected with the inner wall of the discharge hole.

[0011] Preferably, the end of the sealing plug away from the support plate is provided with a conical block, and the top end of the conical block faces the discharge hole.

[0012] Preferably, a spiral rod is arranged in the storage cylinder, the lower end of the spiral rod is suspended, the upper end of the spiral rod penetrates through the top of the storage cylinder and is connected with an external driving source, and the spiral rod is rotationally connected with the storage cylinder.

[0013] Preferably, the external driving source comprises a motor, a support frame, a first belt transmission mechanism, a connecting rod and a second belt transmission mechanism, the support frame is fixed to the top of the processing tank, the shell of the motor is fixed to the support frame, the output end of the motor is connected with the input end of the first belt transmission mechanism, the output end of the first belt transmission mechanism is connected with the input end of the second belt transmission mechanism through the connecting rod, and the output end of the second belt transmission mechanism is connected with the upper end of the spiral rod.

[0014] Preferably, a protection device is further arranged between the support plate and the inner wall of the processing tank, the protection device comprises a rubber belt and a protection sleeve, the rubber belt is located between the first damping member and the sealing plug, one end of the rubber belt is fixedly connected with the support plate, and the other end of the rubber belt is fixedly connected with the inner wall of the processing tank.

[0015] The top of the protection sleeve is fixedly connected with the inner wall of the processing tank, the protection sleeve and the inner wall of the processing tank form a cylindrical structure with two open ends, and the end of the support plate for blocking the discharge hole is movably arranged at the opening of the cylindrical structure.

[0016] Preferably, the protective sleeve comprises a bottom plate and two side plates, the bottom plate is arranged obliquely, the two side plates are arranged opposite to the two sides of the bottom plate, the top of the two side plates is connected with the inner wall of the treatment tank, and the bottom is connected with the bottom plate.

[0017] Preferably, the higher end of the bottom plate is provided with a sliding plate, the sliding plate is located between the rubber belt and the sealing plug, one end of the sliding plate is connected with the bottom of the supporting plate, and the other end is suspended through the bottom plate.

[0018] Preferably, the suspended end of the sliding plate is provided with a limiting plate, a third damping piece is arranged between the limiting plate and the bottom plate, the third damping piece comprises a second damping rod and a third spring, one end of the second damping rod is connected with the limiting plate, the other end is connected with the bottom plate, and the third spring is coaxially sleeved on the second damping rod.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model discloses a domestic sewage treatment device suitable for water quantity change uses adding mechanism, that is, when sewage enters the inside of the treatment tank from the water inlet pipe, the sewage extrudes the supporting plate, so that the first damping piece is stretched downward under the gravity of the sewage, thereby making the supporting plate away from the discharge hole, and further making the chemical agent be added at the same time of adding the sewage, so that the sewage of different water quantity can be treated, and the adaptability of the sewage treatment device is increased. At the same time, the position of the supporting plate can be restored through the setting of the second damping piece, and the automatic control of the adding of the agent according to the water quantity is realized. The protective device can protect the discharge hole from being splashed by the sewage to pollute the agent and the melted agent, so that the agent is prevented from being blocked, and the flow direction of the water and the agent can be guided, and the smooth progress of the whole treatment process is ensured.

[0021] Further, the limiting block of the limiting rod is extruded by the second spring in the direction away from the treatment tank, so that the sealing plug can be returned to the inside of the discharge hole.

[0022] Further, when the powdery chemical agent comes out through the discharge hole, it is scattered after the conical block and does not accumulate on the top of the sealing plug, and when the powdery agent falls on the supporting plate, the agent on the supporting plate can be shaken down when the first spring contracts and the sealing plug hits the discharge hole.

[0023] Further, the rotation of the control screw rod can scatter the powdery agent in the storage cylinder to a certain extent.

[0024] Further, the supporting frame is used for mounting the motor, the screw rod and the stirring rod in the treatment tank share one motor, and the synchronous use of the two is realized. The motor drives the first belt transmission mechanism to rotate, and then drives the second belt transmission mechanism to rotate through the connecting rod, and drives the screw rod to rotate in the inside of the storage cylinder through the second belt transmission mechanism.

[0025] Further, the rubber belt is arranged between the sealing plug and the first damping rod, which can avoid the sewage from the water inlet pipe from contacting the sealing plug along the support plate, and can avoid the sealing plug from bringing water into the storage cylinder.

[0026] Further, the protective sleeve is arranged on the top of the sealing plug, the bottom of the protective sleeve is a slope, which can avoid the upward splashing water from contacting the sealing plug, and can make the powder slide to the inside of the treatment tank.

[0027] Further, the third spring pulls the sliding plate to the direction of the protective sleeve, so that the top of the sliding plate is pressed on the bottom of the support plate, which can block the gap between the protective sleeve and the support plate by the sliding plate, can avoid the water from splashing upward, and can further avoid the medicine in the discharge hole from being caked by the splashing sewage. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A three-dimensional structure schematic diagram of the domestic sewage treatment device suitable for water volume change is provided in the utility model;

[0029] Figure 2 A three-dimensional structure schematic diagram of the support plate in the utility model is provided;

[0030] Figure 3 A three-dimensional structure schematic diagram of the connecting rod in the utility model is provided;

[0031] Figure 4 A three-dimensional structure schematic diagram of the protective sleeve in the utility model is provided;

[0032] Figure 5 A three-dimensional structure schematic diagram of the protective sleeve in the utility model is provided; Figure 4 An enlarged view of A in the utility model is provided.

[0033] In the drawing, 1, treatment tank; 2, water inlet pipe; 3, motor; 4, stirring rod; 5, water outlet pipe; 6, electromagnetic valve; 7, adding mechanism; 701, storage cylinder; 702, discharge hole; 703, first damping rod; 704, first spring; 705, support plate; 706, sealing plug; 707, conical block; 708, limiting rod; 709, second spring; 710, support frame; 711, first belt pulley; 712, second belt pulley; 713, first connecting belt; 714, connecting rod; 715, third belt pulley; 716, fourth belt pulley; 717, second connecting belt; 718, screw rod; 8, protection device; 801, rubber belt; 802, protective sleeve; 803, sliding plate; 804, second damping rod; 805, third spring. DETAILED DESCRIPTION

[0034] The utility model discloses make further detailed explanation to the utility model with specific examples, the explanation is not the limitation of the utility model.

[0035] The utility model discloses a domestic sewage treatment device of adaptation water quantity change, refer to Figure 1 , including processing jar 1, inlet pipe 2, outlet pipe 5, stirring mechanism and adding mechanism 7, inlet pipe 2 is by processing jar 1 top and processing jar 1 inside communication, and stirring mechanism includes motor 3 and stirring rod 4, and the shell of motor 3 is fixed on processing jar 1 top, and one end of stirring rod 4 penetrates processing jar 1 top and is fixedly connected with the output end of motor 3, and stirring rod 4 is rotationally connected with processing jar 1. Adding mechanism 7 includes storage cylinder 701, and the bottom of storage cylinder 701 is fixed with processing jar 1 top, and the bottom of storage cylinder 701 is provided with discharge hole 702 and processing jar 1 inside communication, and the discharge valve of discharging of linkage discharge hole 702 and inlet pipe 2 is provided in processing jar 1, and the discharge valve includes support plate 705, and support plate 705 is fixed on the inner wall of processing jar 1 by first damping member, and one end of support plate 705 is blocked at discharge hole 702, and the other end is fixed on the outside of inlet pipe 2 by second damping member, and discharge hole 702, first damping member, the water outlet of inlet pipe 2 and second damping member are located on the same straight line;When not being used, support plate 705 is blocked at discharge hole 702;Outlet pipe 5 is arranged at the bottom of processing jar 1, and electromagnetic valve 6 is arranged in outlet pipe 5.

[0036] When the sewage enters the inside of processing jar 1 through inlet pipe 2, the sewage drives first damping member and second damping member to move downward under the action of gravity, and first damping member drives support plate 705 to move downward and away from the discharge port of adding mechanism 7, and the medicament in adding mechanism 7 enters the inside of processing jar 1 through the discharge port. Open motor 3, and motor 3 drives stirring rod 4 to rotate, so that the medicament and the sewage are mixed uniformly, so that the bacteria and organic matter in the sewage are killed, and the sewage is treated.

[0037] In an embodiment, the first damping member includes a first damping rod 703 and a first spring 704, one end of the first damping rod 703 is connected with the inner wall of the processing jar 1, the other end is connected with the support plate 705, and the first spring 704 is coaxially sleeved outside the first damping rod 703; the second damping member includes a limiting rod 708 and a second spring 709, one end of the limiting rod 708 is connected with the support plate 705, the other end penetrates the top of the processing jar 1 and extends to connect a limiting block, and the second spring 709 is coaxially sleeved on the part of the limiting rod 708 extending out of the processing jar 1. Among them, the first damping member can realize the recovery of the support rod, the limiting rod 708 can increase the balance ability of the support plate 705, ensure the stability of the up-down movement of the support plate 705, and then ensure the close cooperation of the support plate 705 and the discharge hole 702.

[0038] In an embodiment, the support plate 705 is provided with a sealing plug 706 at one end of the discharging hole 702, and the sealing plug 706 is in sliding connection with the inner wall of the discharging hole 702. The sealing plug 706 can perfectly seal the discharging hole 702, preventing external moisture or air from entering, and greatly ensuring the dry powder state of the medicament, ensuring long-term storage without moisture and deterioration, and providing strong protection for the stability and use effect of the medicament.

[0039] In an embodiment, the sealing plug 706 is provided with a conical block 707 at the end away from the support plate 705, and the top end of the conical block 707 faces the discharging hole 702. When the powder-like chemical medicament comes out of the discharging hole 702, it is scattered after passing through the conical block 707 and does not accumulate on the top of the sealing plug 706. When the powder medicament falls onto the support plate 705, the sealing plug 706 hits the discharging hole 702 in cooperation with the contraction of the first spring 704, thereby shaking the medicament on the support plate 705, ensuring the complete use of the medicament, and avoiding any possible waste or blockage, improving the efficiency of the entire discharging system, and further ensuring the accuracy and reliability of the use of the medicament.

[0040] In an embodiment, the storage cylinder 701 is provided with a screw rod 718, the lower end of the screw rod 718 is suspended, the upper end penetrates the top of the storage cylinder 701 and is connected with an external driving source, and the screw rod 718 is in rotational connection with the storage cylinder 701. The rotating screw rod 718 can scatter the powder medicament in the storage cylinder 701, avoid the powder medicament from caking or accumulating due to long-term standing, greatly improve the flowability of the medicament, make the discharging more smooth and fast when needed, and avoid the problems of poor discharging or blockage caused by caking of the medicament.

[0041] In an embodiment, the storage cylinder 701 is inverted conical at the bottom, and the discharging hole 702 is located at the bottom tip of the inverted cone. The inverted cone is used to optimize the discharging process of the powder medicament, and the tip is the position of the discharging hole 702. When the screw rod 718 rotates in the storage cylinder 701 and scatters the medicament, the medicament can naturally slide down along the inclined surface of the inverted cone and finally gather at the discharging hole 702, playing a role of medicament drainage, making the medicament flow out more smoothly and uniformly, avoiding the sudden outflow or intermittent situation, avoiding the accumulation and residue of the medicament at the bottom of the storage cylinder 701, ensuring the complete use of the medicament, improving the storage and discharging efficiency of the medicament, and ensuring the accuracy and reliability of the use of the medicament.

[0042] In an embodiment, the external driving source comprises a motor 3, a support frame 710 fixed to the top of the treatment tank 1, a first belt transmission mechanism, a connecting rod 714, and a second belt transmission mechanism. The housing of the motor 3 is fixed to the support frame 710. The output end of the motor 3 is connected to the input end of the first belt transmission mechanism. The output end of the first belt transmission mechanism is connected to the input end of the second belt transmission mechanism through the connecting rod 714. The output end of the second belt transmission mechanism is connected to the upper end of the screw rod 718. The first belt transmission mechanism comprises a first belt pulley 711, a second belt pulley 712, and a first connecting belt 713. The center of the first belt pulley 711 is fixedly connected to the output end of the motor 3. The second belt pulley 712 is rotatably arranged at the top of the treatment tank 1. The first connecting belt 713 is sleeved on the surfaces of the first belt pulley 711 and the second belt pulley 712. The second belt transmission mechanism comprises a third belt pulley 715, a fourth belt pulley 716, and a second connecting belt 717. The third belt pulley 715 is connected to the second belt pulley 712 through the connecting rod 714. The fourth belt pulley 716 is fixedly connected to the top of the screw rod 718. The second connecting belt 717 is sleeved on the surfaces of the third belt pulley 715 and the fourth belt pulley 716. The support frame 710 is used to provide a mounting position for the motor 3. The motor 3 provides an initial power source for the entire transmission system. The first belt pulley 711 rotates synchronously with the rotation of the motor 3. Through the transmission of the first connecting belt 713, the power of the motor 3 is transmitted to the second belt pulley 712. The connecting rod 714 plays a role in transmitting power. The second belt pulley 712 drives the connecting rod 714 to rotate. The connecting rod 714 drives the third belt pulley 715 to rotate. Then, the fourth belt pulley 716 is driven to rotate through the second connecting belt 717. The fourth belt pulley 716 drives the screw rod 718 to rotate.

[0043] In an embodiment, the screw rod 718 and the stirring rod 4 share one motor 3. When the motor 3 is started, the rotating force generated thereby simultaneously drives the screw rod 718 to rotate in the storage cylinder 701 and drives the stirring rod 4 to work in the corresponding stirring area. This not only saves equipment cost and space occupation, but also simplifies the structure and maintenance process of the equipment, realizes efficient collaborative work in the process of medicament treatment, and improves the overall processing efficiency and medicament quality.

[0044] In an embodiment, a protection device 8 is further arranged between the support plate 705 and the inner wall of the treatment tank 1. The protection device 8 comprises a rubber belt 801 and a protective sleeve 802. The rubber belt 801 is located between the first damping member and the sealing plug 706. One end of the rubber belt 801 is fixedly connected to the support plate 705, and the other end is fixedly connected to the inner wall of the treatment tank 1. The top of the protective sleeve 802 is fixedly connected to the inner wall of the treatment tank 1. The protective sleeve 802 and the inner wall of the treatment tank 1 form a cylindrical structure with two open ends. The support plate 705 is used to block one end of the discharging hole 702 and is movable at the opening of the cylindrical structure.

[0045] The rubber belt 801 and the protective sleeve 802 can effectively isolate the sewage flowing from the water inlet pipe 2 from directly contacting the key components such as the sealing plug 706, wherein the rubber belt 801 can avoid the sewage coming from the water inlet pipe 2 from contacting the sealing plug 706 along the support plate 705 to a certain extent, avoid the sealing plug 706 from bringing water into the inside of the storage cylinder 701 to a certain extent, block the spread of the sewage upwards, thereby protecting the sealing plug 706 from being eroded by the sewage and avoiding impurities possibly carried by the sewage from entering the inside of the storage cylinder 701 to affect the purity of the medicament. The protective sleeve 802 not only can provide support for the support plate 705, but also can further isolate the sewage from contacting the support plate 705 and the surrounding area thereof, thereby greatly improving the sealing performance of the entire system.

[0046] In an embodiment, the protective sleeve 802 comprises a bottom plate and two side plates, the bottom plate is arranged obliquely, the two side plates are oppositely arranged on two sides of the bottom plate, the top of each of the two side plates is connected with the inner wall of the treatment tank 1, and the bottom of each of the two side plates is connected with the bottom plate. The obliquely arranged bottom plate can avoid the upwardly splashed water from contacting the sealing plug 706 while allowing the powdery medicament to slide against the inclined surface into the inside of the treatment tank 1, thereby realizing effective separation of the water flow and the medicament.

[0047] In an embodiment, the higher end of the bottom plate is provided with a sliding plate 803, the sliding plate 803 is located between the rubber belt 801 and the sealing plug 706, one end of the sliding plate 803 is connected with the bottom of the support plate 705, and the other end of the sliding plate 803 is suspended through the bottom plate.

[0048] In an embodiment, the suspended end of the sliding plate 803 is provided with a limiting plate, a third damping member is arranged between the limiting plate and the bottom plate, the third damping member comprises a second damping rod 804 and a third spring 805, one end of the second damping rod 804 is connected with the limiting plate, the other end of the second damping rod 804 is connected with the bottom plate, and the third spring 805 is coaxially sleeved on the second damping rod 804. The third spring 805 pulls the sliding plate 803 towards the protective sleeve 802, so that the top of the sliding plate 803 is pressed against the bottom of the support plate 705, thereby blocking the gap between the protective sleeve 802 and the support plate 705 by the sliding plate 803 to a certain extent to avoid the splashing of water upwards.

[0049] The working principle of the domestic sewage treatment device suitable for water quantity change is as follows:

[0050] The filtered domestic sewage is passed to the inside of the treatment tank 1 through the water inlet pipe 2, and then the powdery chemical agent is added to the inside of the treatment tank 1, the stirring rod 4 is driven to rotate by the motor 3, so that the chemical agent is uniformly mixed with the sewage, so that the bacteria and organic matters in the sewage are killed, and the sewage treatment effect is achieved.

[0051] When the powdery chemical agent is discharged through the discharge hole 702, it is scattered after the conical block 707 and does not accumulate on the top of the sealing plug 706, and when the powdery chemical agent falls on the supporting plate 705, the first spring 704 is contracted, the sealing plug 706 hits the discharge hole 702, so that the chemical agent on the supporting plate 705 is shaken down, and when the motor 3 rotates, the motor 3 drives the first belt pulley 711 to rotate, and then drives the third belt pulley 715 at the top of the connecting rod 714 to rotate through the first connecting belt 713, and then drives the spiral rod 718 to rotate in the inside of the storage cylinder 701 through the second connecting belt 717, so that the powdery chemical agent is prevented from caking to a certain extent.

[0052] When the supporting plate 705 moves downward, the rubber belt 801 is stretched at the same time, the third spring 805 between the bottom plate and the limiting plate is compressed, the powdery chemical agent is inclined to slide from the bottom plate and finally falls into the treatment tank 1, and the splashing water drops caused by the chemical agent falling into the sewage fall back into the treatment tank 1 again under the blockage of the bottom plate and the sliding plate 803.

[0053] When the water inlet pipe 2 stops feeding water, the supporting plate 705 re-seals the discharge hole 702 under the action of the first spring 704, the second spring 709 and the third spring 805, and fully prepares for the next chemical agent treatment process.

[0054] The above only describes the preferred embodiments of the present application, and does not limit the technical solutions of the present application in any way. Those skilled in the art should understand that without departing from the spirit and principles of the present application, the technical solutions can be modified and replaced in several simple ways, and these modifications and replacements also belong to the protection scope covered by the claims.

Claims

1. A domestic sewage treatment device that is adaptable to changes in water volume, characterised in that, The utility model provides a water purifying device, including processing jar (1), water inlet pipe (2), water outlet pipe (5), stirring mechanism and adding mechanism (7), water inlet pipe (2) is by processing jar (1) top with processing jar (1) inside communication, and stirring mechanism includes motor (3) and stirring rod (4), and the shell of motor (3) is fixed on processing jar (1) top, and one end of stirring rod (4) penetrates processing jar (1) top and is fixedly connected with the output end of motor (3), and stirring rod (4) is rotatably connected with processing jar (1); Adding mechanism (7) includes storage cylinder (701), the bottom of storage cylinder (701) is fixed with the top of processing jar (1), and the bottom of storage cylinder (701) is provided with discharge hole (702) and is communicated with the inside of processing jar (1), and a discharge valve for linking discharge hole (702) and water inlet pipe (2) is arranged in processing jar (1), the discharge valve includes a support plate (705), the support plate (705) is fixed to the inner wall of processing jar (1) by a first damping member, one end of the support plate (705) is blocked at the discharge hole (702), and the other end is fixed to the outside of the water inlet pipe (2) by a second damping member, the discharge hole (702), the first damping member, the water outlet of the water inlet pipe (2) and the second damping member are located on the same straight line; when not in use, the support plate (705) is blocked at the discharge hole (702); A protective device (8) is further arranged between the support plate (705) and the inner wall of the processing jar (1), and the water outlet pipe (5) is arranged at the bottom of the processing jar (1), and an electromagnetic valve (6) is arranged in the water outlet pipe (5).

2. The domestic sewage treatment device adapting to water volume change according to claim 1, characterized in that, The first damping member includes a first damping rod (703) and a first spring (704), one end of the first damping rod (703) is connected with the inner wall of the processing jar (1), the other end is connected with the support plate (705), and the first spring (704) is coaxially sleeved outside the first damping rod (703); the second damping member includes a limiting rod (708) and a second spring (709), one end of the limiting rod (708) is connected with the support plate (705), the other end penetrates the top of the processing jar (1) and extends to connect a limiting block, and the second spring (709) is coaxially sleeved on the part of the limiting rod (708) extending out of the processing jar (1).

3. The domestic sewage treatment device adapting to water volume change according to claim 1, characterized in that, One end of the support plate (705) blocking the discharge hole (702) is provided with a sealing plug (706), and the sealing plug (706) is slidably connected with the inner wall of the discharge hole (702).

4. The domestic wastewater treatment device that adapts to changes in water quantity according to claim 3, characterized in that, The other end of the sealing plug (706) away from the support plate (705) is provided with a conical block (707), and the top end of the conical block (707) faces the discharge hole (702).

5. The domestic sewage treatment device adapting to water volume change according to claim 1, characterized in that, A screw rod (718) is arranged in the storage cylinder (701), the lower end of the screw rod (718) is suspended, the upper end penetrates the top of the storage cylinder (701) and is connected with an external driving source, and the screw rod (718) is rotatably connected with the storage cylinder (701).

6. The domestic wastewater treatment device that adapts to changes in water quantity according to claim 5, characterized in that, The external driving source comprises a motor (3), a support frame (710), a first belt transmission mechanism, a connecting rod (714) and a second belt transmission mechanism, the support frame (710) is fixed to the top of the treatment tank (1), the shell of the motor (3) is fixed to the support frame (710), the output end of the motor (3) is connected with the input end of the first belt transmission mechanism, the output end of the first belt transmission mechanism is connected with the input end of the second belt transmission mechanism through the connecting rod (714), and the output end of the second belt transmission mechanism is connected with the upper end of the screw rod (718).

7. The domestic sewage treatment device adapting to water volume change according to claim 1, characterized in that, The protection device (8) comprises a rubber belt (801) and a protective sleeve (802), the rubber belt (801) is located between the first damping member and the sealing plug (706), one end of the rubber belt (801) is fixedly connected with the support plate (705), and the other end is fixedly connected with the inner wall of the treatment tank (1); The top of the protective sleeve (802) is fixedly connected with the inner wall of the treatment tank (1), the protective sleeve (802) and the inner wall of the treatment tank (1) form a cylindrical structure with two open ends, and the support plate (705) is arranged to be movable at one end of the cylindrical structure.

8. The domestic wastewater treatment device that adapts to changes in water quantity according to claim 7, characterized in that, The protective sleeve (802) comprises a bottom plate and two side plates, the bottom plate is arranged to be inclined, the two side plates are oppositely arranged on the two sides of the bottom plate, the top of each of the two side plates is connected with the inner wall of the treatment tank (1), and the bottom of each of the two side plates is connected with the bottom plate.

9. The domestic wastewater treatment device that adapts to changes in water quantity according to claim 8, characterized in that, The end of the bottom plate with a higher position is provided with a sliding plate (803), the sliding plate (803) is located between the rubber belt (801) and the sealing plug (706), one end of the sliding plate (803) is connected with the bottom of the support plate (705), and the other end is suspended through the bottom plate.

10. The domestic wastewater treatment device that adapts to changes in water quantity according to claim 9, characterized in that, The end of the sliding plate (803) is provided with a limiting plate, a third damping member is arranged between the limiting plate and the bottom plate, the third damping member comprises a second damping rod (804) and a third spring (805), one end of the second damping rod (804) is connected with the limiting plate, the other end is connected with the bottom plate, and the third spring (805) is coaxially sleeved on the second damping rod (804).

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